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A kind of ternary supramolecular self-assembly upconversion gel and its preparation method and application

A supramolecular self-assembly and gel technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of low up-conversion efficiency and achieve excellent The effect of upconversion performance, energy efficiency, and high upconversion efficiency

Active Publication Date: 2022-04-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the low upconversion efficiency of existing upconversion gels, and to provide a ternary supramolecular self-assembled upconversion gel. This gel structure can not only effectively realize Triplet energy transfer, the triplet hydrogen bond network in the gel can also effectively block the quenching of triplet excitons by oxygen, improving the upconversion efficiency

Method used

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  • A kind of ternary supramolecular self-assembly upconversion gel and its preparation method and application
  • A kind of ternary supramolecular self-assembly upconversion gel and its preparation method and application
  • A kind of ternary supramolecular self-assembly upconversion gel and its preparation method and application

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Embodiment 1

[0041] A ternary supramolecular self-assembled upconversion gel with platinum octaethylporphyrin as a donor, 4 4,4'-(anthracene-9,10-diyl)bis(N-(3-((4 -(dioctylamino)-6-((2-ethylhexyl)amino)-1,3,5-triazine-2-yl)amino)propyl)benzamide) as acceptor, and dodeca Alkyl cyanurates are self-assembled in toluene through triple hydrogen bonding, in which platinum octaethylporphyrin, 4 4,4'-(anthracene-9,10-diyl)bis(N-( 3-((4-(dioctylamino)-6-((2-ethylhexyl)amino)-1,3,5-triazine-2-yl)amino)propyl)benzamide), The mass ratio of dialkyl cyanurate is 1:60:15.

[0042] The preparation method of the above-mentioned ternary supramolecular self-assembly upconversion gel comprises the following steps:

[0043] S1. Combine 9,10-dibromoanthracene (570mg, 1.7mmol), 4-methoxycarbonylphenylboronic acid (763mg, 4.24mmol), potassium carbonate (829mg, 6.0mmol), [1,1'-bis(diphenyl Phosphinoyl)ferrocene]palladium dichloride (124mg, 5mol%), 35mL DMF was added to a 100mL two-necked flask, heated to reflu...

Embodiment 2

[0066] The components and preparation method of a ternary supramolecular self-assembly upconversion gel are the same as in Example 1, the difference is that platinum octaethylporphyrin, 4 4,4'-(anthracene-9,10-diyl )bis(N-(3-((4-(dioctylamino)-6-((2-ethylhexyl)amino)-1,3,5-triazine-2-yl)amino)propyl) Benzamide), the mass ratio of dodecyl cyanurate is 1:50:10.

Embodiment 3

[0068] The components and preparation method of a ternary supramolecular self-assembly upconversion gel are the same as in Example 1, the difference is that platinum octaethylporphyrin, 4 4,4'-(anthracene-9,10-diyl )bis(N-(3-((4-(dioctylamino)-6-((2-ethylhexyl)amino)-1,3,5-triazine-2-yl)amino)propyl) Benzamide), the mass ratio of dodecyl cyanurate is 1:80:20.

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Abstract

The invention discloses a ternary supramolecular self-assembled upconversion gel and its preparation method and application. The photosensitizer is used as a donor, and 9,10-diphenylanthracene derivatives are used as acceptors. The gelling factor self-assembles in an organic solvent through triple hydrogen bonding to prepare a ternary supramolecular self-assembled upconversion gel. This gel structure not only shortens the spatial distance between the photosensitizer and the receptor, but also makes the triplet excited The abundant hydrogen bond network in the gel can also effectively block the quenching of triplet excitons by oxygen, thus enabling efficient triplet annihilation upconversion emission under air conditions. The ternary supramolecular self-assembled upconversion gel of the present invention has excellent upconversion performance, and can be widely used in the fields of photovoltaics, photocatalysis, anti-counterfeiting and the like.

Description

technical field [0001] The present invention relates to the technical field of organic luminescent materials, more specifically, to a ternary supramolecular self-assembled upconversion gel and its preparation method and application. Background technique [0002] Photon upconversion based on triplet-triplet-annihilation (TTA, triplet-triplet-annihilation) is a technology that converts long-wavelength, low-energy photons into short-wavelength, high-energy photons. It is used in solar cells, biological imaging, and photocatalysis. It has important application value in other fields. In previous studies, most TTA upconversion systems were completed in low-viscosity organic solutions and polymers. Effects and other factors limit the application of organic media systems in TTA upconversion. The polymer solid as a medium solves the problem of oxygen quenching, but the polymer medium severely limits the diffusion of excited triplet molecules, so that high-intensity photoexcitation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J31/06C09K11/06
CPCC08G83/008B01J31/06C09K11/06C09K2211/1416C09K2211/1425C09K2211/1466B01J35/23B01J35/39
Inventor 籍少敏贺琴王至上林丹霍延平
Owner GUANGDONG UNIV OF TECH
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